Last updated: August 22, 2025
In December, the average temperature in Jose de San Martin, Argentina is 14°C (58°F), with minimums reaching as low as 1°C (33°F) and maximums soaring up to 32°C (89°F). Expect 22 mm (0.9 in) of precipitation spread across 5 days and an average humidity of 74%.
In December in Jose de San Martin, the average temperature is 14°C (58°F). Maximum temperatures can reach as high as 32°C (89°F), while minimum temperatures can drop to as low as 1°C (33°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Jose de San Martin in December, the total precipitation amount is 22 mm (0.9 in) spread over a period of 5 days.
In Jose de San Martin in December humidity is 74%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or indoor venues more often.
In Jose de San Martin in December, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Jose de San Martin.
UV Risk Categories
Weather in Jose de San Martin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Jose de San Martin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 13 mm (0.5 inches) | 70% | extreme |
| February Weather | 15°C (60°F) | 13 mm (0.5 inches) | 77% | extreme |
| March Weather | 12°C (54°F) | 30 mm (1.2 inches) | 75% | very high |
| April Weather | 8°C (47°F) | 39 mm (1.5 inches) | 84% | high |
| May Weather | 5°C (41°F) | 39 mm (1.5 inches) | 89% | moderate |
| June Weather | 2°C (36°F) | 63 mm (2.5 inches) | 90% | low |
| July Weather | 2°C (35°F) | 36 mm (1.4 inches) | 90% | moderate |
| August Weather | 3°C (39°F) | 38 mm (1.5 inches) | 90% | moderate |
| September Weather | 5°C (42°F) | 22 mm (0.9 inches) | 85% | high |
| October Weather | 8°C (46°F) | 25 mm (1.0 inches) | 80% | very high |
| November Weather | 11°C (53°F) | 26 mm (1.0 inches) | 73% | extreme |
| December Weather | 14°C (58°F) | 22 mm (0.9 inches) | 74% | extreme |